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b:head_first_statistics:using_statistical_sampling [2019/11/20 01:37] – [How to design a sample] hkimscilb:head_first_statistics:using_statistical_sampling [2022/11/04 10:40] (current) hkimscil
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 ====== Using Statistical Sampling ====== ====== Using Statistical Sampling ======
 +<code>
 +rnorm(16, 110, 10)
 +</code>
 +
 {{tablelayout?colwidth="260px"&float=left}} {{tablelayout?colwidth="260px"&float=left}}
 |{{:b:head_first_statistics:pasted:20191119-114727.png?250}}|{{:b:head_first_statistics:pasted:20191119-114827.png?250}}|  |{{:b:head_first_statistics:pasted:20191119-114727.png?250}}|{{:b:head_first_statistics:pasted:20191119-114827.png?250}}| 
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 ===== How to design a sample ===== ===== How to design a sample =====
 Define your target [[:population]] Define your target [[:population]]
-Define your sampling units +Define your [[:sampling units]] 
-Define your [[:sampling#sampling_frame]]+  * 책, 단원, 문단, 단어  
 +  * 개인 (individuals) vs. 지역단위, 구 (동작구 등) 
 +    * 지역단위 범죄율 . . . . 외국인이 많이 사는 곳 . . . . 범죄율이 높을 경우 --> [[:ecological fallacy]] 
 +    * [[:individual fallacy]] or [[:exception fallacy]] 개인을 보고 전체를 판단하는 경우 
 +  * [[:Unit of analysis]] 참조 
 +Define your [[:Sampling#sampling_frame|Sampling Frame]] (표집틀)
 If you don’t design your sample well, your sample may not be accurate. If you don’t design your sample well, your sample may not be accurate.
-sa [[:sampling]]+See [[:sampling]] document 
 + 
 + 
 ===== Sometimes samples can be biased ===== ===== Sometimes samples can be biased =====
 +{{:b:head_first_statistics:pasted:20191120-011104.png}}
 +
 +<WRAP info 60%>
 +__Poorly designed questions__
 +
 +  * Leading question: How great is our hard-working customer service team?
 +  * Fixed: How would you describe your experience with the customer service team?
 +
 +  * 유도질문: 매년마다 베스트 서비스 어워드를 받고 있는 저희 호텔에 대해서 어떻게 생각하십니까?
 +  * 정상질문: 저희 호텔의 서비스에 대해서 평가를 하신다면?
 +
 +  * 단정질문: 평상시 맥주를 어디에서 즐기십니까?
 +  * 맥주를 먹는다는 것을 단정하고 질문을 만들었다.
 +
 +  * 이중장전질문: 저희가게에서 물건을 찾기가 쉽운 편이었으며, 구입하시었나요?
 +
 +  * Double Negative: 사용하신 물건이 깨끗하지 않지 않았나요?
 +  * 나는 온라인으로는 드물게 물건을 안산다. 
 +</WRAP>
 +
 +
 +===== How to choose your sample(, then) =====
 +see [[:Sampling]]
  
-{{tablelayout?colwidth="200px,200px"&rowsHeaderSource=1&rowsVisible=5&float=right}} 
-^ header 1 ^ header 2 ^ 
-| cell A1 | cell B1 | 
-| cell A2 | cell B2 | 
-| cell A3 | cell B3 | 
b/head_first_statistics/using_statistical_sampling.1574181473.txt.gz · Last modified: 2019/11/20 01:37 by hkimscil

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